Dear Steve,
Obviously you have a special exemption on your passport so as to gain entry to our country, or is it the mere fact that you are really an x-pat. Aussie anyway?
With respect to your 20 year old steel cased bore perhaps it may be best described with a much used colloquial Aussie saying, "she's probably rooted mate". Which is in reference to the steel bit in the ground.
I think that I would still have a go at the treatment process. Let me know how you go.
Cheers,
Robin
P.S.
Al,
Just for the record," we don't have too much trouble with dingo's, roo's nor trees as the Tasmanian devils fixed them all!
> Sir Robin
>
> I will be in Oz sun-tues so I'll try to buy some or at least read the
> label.
>
> The bore is probably 20 years old certainly more than 14 and possibly a
> lot more.
>
> I had an old recip pump - about 200gph (Watermaster ex local tip) but
> slowed down as far as I could. Surface mounted. Yesterday fitted the
> smallest centrifugal self primer I could find. Its pulling 8m suction so
> it works OK. I think the bore is probably quite shallow but have no way
> of knowing for sure.
>
> Thanks
>
> Steve
>
>
>
> -----Original Message-----
> From: Robin Badcock [mailto:rbadcock@vision.net.au]
> Sent: Wednesday, July 07, 2004 3:18 PM
> To: PipingDesign@yahoogroups.com
> Subject: Re: [PipingDesign] Bore rehabilitation methods
>
>
> Mr Steve,
>
> It would sound like to me, from your description that your bore is
> suffering from iron bacteria contamination. This contaminant is a
> reddish ochre colour. We have this problem often here in OZ and there
> are several methods of dealing with it. If it is indeed iron, and
> considering you predicament with your concrete encased pipe work your
> reverse flushing may well disturb enough of the iron to increase your
> pumping rates. A more successful option is to induce a non toxic iron
> dissolving medium in liquid form and circulate this around the bore via
> your existing pump. There are some of these products available and a
> brand name of one here in OZ is "Bore Clear" (or is that Clear Bore
> -whatever) and is aptly named. After a number of hours of circulation
> dependent on the level of contamination (yours sounds severe) you then
> pump the dissolved water iron mix over into the bush and continue to
> pump till the water is obviously clear (remember non-toxic). This
> treatment has the added advantage of opening up the slots in your steel
> casing which I would feel are partially blocked as well.
>
> This treatment is about $250 (OZ) for a 20 litre drum and I will need to
> investigate the make up of this fluid as I know that you are going to
> ask me this.
>
> Anyway if it keeps the cook happy it will be a cheap investment!
>
> Incidentally how old is the bore and what pump do you have on it? Is it
> a deep well injector arrangement? Also is the water slightly acid?
>
> Hope some of this helps.
>
> Cheers,
>
> Robin
>
>
>
>
>
>
> ----- Original Message -----
> From: "Steve McKenzie" <mechproj@xtra.co.nz>
> To: <PipingDesign@yahoogroups.com>
> Sent: Wednesday, July 07, 2004 7:43 AM
> Subject: RE: [PipingDesign] Bore rehabilitation methods
>
>
> > Hi Robin
> >
> > no I don't have a recent analysis, but have plenty of iron and silica
> > in the water. When the bore is disturbed, the water turns red and
> > occasionally corroded bits of the bore liner pipe (steel) get sucked
> > out. After a disturbance, the water takes on a cloudy appearance for a
>
> > few days; it looks like colloidal silica. When everything is fine and
> > settled, the water is crystal clear and odour free. At the moment, it
> > is milky rust brown and has that haem odour.
> >
> > Cheers
> >
> > Steve
> >
> > -----Original Message-----
> > From: Robin Badcock [mailto:rbadcock@vision.net.au]
> > Sent: Wednesday, July 07, 2004 12:52 AM
> > To: PipingDesign@yahoogroups.com
> > Subject: Re: [PipingDesign] Bore rehabilitation methods
> >
> >
> > Steve,
> >
> > Have had a fair bit to do with domestic bore holes and water supplies
> > over the years. Do you have a current constituent analysis of your
> > water as this will no doubt provide indications as to the nature of
> > the screen blockage and you shall be able to make an informed decision
>
> > as to how best to treat this. We have a degree of problems with iron
> > fouling and other such build ups that reduce inflows to wells and pump
>
> > intakes.
> >
> > Cheers,
> >
> > Robin
> >
> >
> >
> >
> > ----- Original Message -----
> > From: "Steve McKenzie" <mechproj@xtra.co.nz>
> > To: <PipingDesign@yahoogroups.com>
> > Sent: Tuesday, July 06, 2004 7:04 PM
> > Subject: [PipingDesign] Bore rehabilitation methods
> >
> >
> > > Gents + 1
> > >
> > > my water bore at home has nearly given up the ghost.
> > > I dont know much about it except that it has a 40mm HPDE pipe
> > > concreted (at the top) into a 65NB steel liner. And its old. No idea
>
> > > of the depth I cannot extract the HDPE pipe because of the concrete,
>
> > > and if I did, I may not be able to get it back in. The bore is
> > > slightly artesian;overflows very slowly at zero load. However if I
> > > pump it, the pressure drops to around 7m lift which is all the pump
> > > can do. Pumped, I guess the current yield is around 5 lpm; used to
> > > be about 30 lpm. I suspect the screen is blocked and am wondering
> > > about trying a backflush, with either compressed air or water, ot
> > > try and clear it. Any ideas/references?
> > > Cost of a new bore is $10,000 with no guarantee of water.
> > >
> > > Cheers
> > >
> > > Steve
> > >
> > >
> > >
> > >
> > > =========================================
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> > > http://www.pipingoffice.us/
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> > > Yahoo! Groups Links
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> >
> >
> >
> >
> >
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> >
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>
>
>
>
>
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> http://www.pipingoffice.us/ =========================================
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>
> Yahoo! Groups Links
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>
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Received on Wed Jul 07 02:11:00 2004
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